I too had a problem with my computer this weekend my son was searching for lego stuff on youtube and got warnings about viurses that my viuris protection did not stop. There is a online site malwarebytes.org that has a free download version that I used that found and got rid of what was there. I ran it several times on all the user names and it seems to cleared up all my problems so far (knock on wood). hope it works for you good luck

I agree, those 3 should be in everybody's computer 'toolbox'. A great place to download them is www.download.com

Also a good antivirus program is a must. McAfee, AVG, Panda are good ones. the one I'm favoring right now is Kaspersky because of decent pricing for multiple computers and the family controls it has. Kaspersky's website is very easy to find your way around, And it appears that the software is too. I'm just waiting for my present A-V to expire before getting it.